The RALLY project: remote sensing of algal blooms in Lake IJssel : integration with in situ data and computational modelling / B. Ibelings ... [et al.]The RALLY project: remote sensing of algal blooms in Lake IJssel : integration with in situ data and computational modelling / Bas Ibelings ... [et al.]Sieralgen en biodiversiteit: bijdrage, functioneren en beheer : state of the art rapportage / [samenst. G. Mulderij, B.W. Ibelings, R. Bijkerk]